Spring-hinge



(No Model.)

J. W. PIERCE.

SPRING HINGE. No. 409,371. Patented Aug, 20, 1889.

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N, PETERS. Pholbiilmgmphur, Washington. 0:0.

UNITED STATES PATENT OFFICE.

JESSE W. PIERCE, OF BELTON, TEXAS.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 409,371, dated August 20, 1889.

Serial No. 312,739. (No model.)

To all whom, it may concern.- tion cl, the end of which is provided with trun- Be it known that I, JESSE WV. PIERCE, a citinions d, that engage projections a formed zen of the United States, residing at Bolton, integral with the leaf 0.. The projections a in the county of Bell and State of Texas, have are curved toward the leaf a, and form re- 5 invented a new and useful Spring-Hinge, of cesses a in their sides, which serve as bear- .5 which the following is aspecilication. ings for the trunnions d of the rod D. By The invention relates to improvements in this construction the rod may be withdrawn spring-hinges from the bearings a and turned upon its The object of the present invention is to side andrcmoved from the casing. The spring provide a spring-hinge of simple and ineX- may then be taken out of the casing, and the 50 pensive construction, in which the tension of hinge is adapted for ordinary use. the spring may be regulated, and in which the From the foregoing description and the acspring may be entirely removed from the companying drawings the construction, ophinge when desired. eration, and advantages of the invention will 'The invention consists in the construction readily be understood. 5 5

and novel combination and arrangement of What I claim isparts, hereinafter fully described, illustrated 1. The combination of a hinge having one in the accompanying drawings, and pointed of its leaves provided with a casing and the out in the claims hereto appended. other with projections a a spring arranged 2c In the drawings, Figure 1 is a perspective within the casing, and therod passing through 60 view of a hinge embodying the invention. the casing and engaging the spring and hav- Fig. 2 is a side elevation, and Fig. 3 is a 1011- ing trunnions at its ends removably engaging gitudinal sectional View. the said projections, substantially as de- Referring to the aceompanyin g drawings, A scribed.

designates a hinge composed of a long leaf to 2. The combination of a hinge having one 65 and a short one a, which are connected toof its leaves provided with a casing and the gether by a pintle a The leaf a is provided other provided with curved projections, the with a cylindrical casing l which is preferaspring arranged in the casing, and the rod bly formed integral with the leaf and inengaging said spring and having the curved closes a spiral spring 0. The spring Chas portion provided with trunnions engaging 70 its bearing against the rear side of said casthe said projections, substantially as de ing, which is provided with an opening I), scribed. through which passes the end of a rod D, In testimony that I claim the foregoing as which has an adjustable collar E. The admy own I have hereto affixed mysignature in justable collar may be moved along the rod presence of two witnesses.

D to diminish or increase the tension of the spring 0, and it is provided with a set-screw JESSE \V. PIERCE. c to engage the rod and prevent the collar Witnesses: slipping. JOHN H. SIceERs, 40 The front of the rod D has a curved por- E. G. SIGGERS. 

